I had a brain freeze.
AC on 120 volt not 12 volt
So I would need a 1000 watt solar panel to run the AC. If I had 100% sun on the panel. But I would need 2000 watt solar panel to start the AC.
This idea is OUT.

One thing I have been wondering about cooling since we have no AC and do not plan to hack one into an old scamp that was not designed for it. Too lazy to re-engineer I guess.

What is the air temp under the camper? Is it cooler than what would come throught the windows? Could a roof vent fan or a floor mounted fan pull that air in if there was a floor vent?

Those of us who own dogs know that they tend to go to ground under the camper if possible when it's hot. I seem to recall that even the temp under the eaves of a house was cooler than in the house and was the basis for some sort of green cooling system.

Everyone at Amazon gives that cooler fan thing 1 star, for the dog I think I would just put a bucket of ice water down, area of floor near bucket stays cooler and dog can get drink of cold water. 2fer.

One thing I have been wondering about cooling since we have no AC and do not plan to hack one into an old scamp that was not designed for it. Too lazy to re-engineer I guess.

If your going to be on power then a cheap small light portable ac does the job without any hacking. The PO of my trailer gave me one for the rear window that he made a little wooden holder for that went over the back window ledge and it worked really well - pretty easy to set up as well but hated packing it around in the back of the car when not using though.... havent actually bothered bring it along since installing the Fantastic Fan.